Texas Instruments TI-89 Voyage 200, User Manual

Page: 408 / 1008

3D Graphing 408
Example
Example Example
Example
Graph the equation sin(x
4
+y–x
3
y) = .1.
1. Use
3
to set
Graph=3D
.
2. Press
8 #
, and define the equation:
z1(x,y)=sin(x^4+y– x^3y)–.1
3. Press
8 $
, and set the Window
variables as shown.
4. Press:
8
Í
Turn on the axes, set
Style = IMPLICIT PLOT
, and return to the
Window editor.
5. Press
8 %
to graph the equation.
It will take awhile to evaluate the graph;
so be patient.
The graph shows where
sin(x
4
+y–x
3
y) = .1